Comparison of The Flow Characteristics between Circular and Wedged Configurations in Internal Combustion Engine Chambers

Abstract

Flow characteristics in internal combustion engine chambers of wedged and circular cross-sectional configurations were numerically investigated during intake stroke. The convex radius reduction effect on primary and secondary flow parameters was studied. Results indicated a pressure drop increase of 0.05%, and swirl number and secondary vortex intensity reductions of 14.04% and 75.57% respectively compared to circular configuration. Further optimization is needed to increase compactness without sacrificing performance.